<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>圆形弹出菜单按钮</title>
    <link rel="stylesheet" href="../assets/css/1.圆形弹出菜单按钮.css">
  </head>
  <body>
    <main class="container">
        <div class="wrap">
            <input type="checkbox"  id="checking" style="display: none;">
                <button class="blob">★</button>
                <button class="blob">✉</button>
                <button class="blob">☀</button>
                <button class="blob">♥</button>
                <button class="blob">☺</button>
                <button class="blob">☄</button>
                <button class="blob">♬</button>
                <button class="blob">☁</button>
                <label class="blob" for="checking" >
                    <span class="bar"></span>
                    <span class="bar"></span>
                    <span class="bar"></span>
                </label>
            </input>
        </div>
    </main> 
    <svg>
        <def>
            <filter id="filt">
                <fegaussianblur in="SourceGraphic" result="blur" stdDeviation="10"></fegaussianblur>
                <fecolormatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="filt"></fecolormatrix>
                <feblend in2="filt" in="SourceGraphic" result="mix"></feblend>
            </filter>
        </def>
    </svg>
  </body>
</html>
